Improvement in corn-harvester cutters



J. DE FREITAS.

. GORN'HARVESTBRUUTTER v Y No. 105,784. U Vlmemfui July 26, 1870.Y

v Witneeseg. v Inv ntor. I

' am v A ,s 4

To all whom it may'clonoern JOHN DE rentres, Tor. SPRINGFIELD, ILLINOIS'.

Leners raanrlvalossa dem: July 26,1370.'V`

ne it known simmons JLDE Exams, Distr-ingfield, in the countyofSangainon and .in-.the 4State Vot' Illinois, have i'nventeda'new and useful Improved Out-N texgttlbe appliedto QorulHarvestersg and do hereby 'declarev that the following lis a full,clear, and exact de -v scription thereof, reference'being had to the accompahnylilng drawing making a part ot' this specification, in w ic Figure 4l is aplanvie'w ofmy improved device, in which' the cutter isshowu in a horizontal position.'

drawn forward and placed 'in 'a vertical, position `Figure 3-is a cross-section on theliue a; :tj of tigfl'?, Figure 4 is a like view of a modification of my de`- -Figure2 isa likevlew of the same, .with lthe cutterf Vice; and Y Figure 5 is a plan vie'wof -'the semicircular casing, Qpencdroutward, Kso as to show the guide-grooves. Y

Letters of like'natneand kiudrefer to like parts -in each'oi'th'efigures.

My invention has for its object the 'changingfof the `radial position of the' reciprocating cutterof a cornv barvester,so as tocause'it to advance-and ret-urn` in diii'erent paths ;4 and, to'tbis end,

[t consists inthe employment of a spiralgioove, or its equivalent, either permanentlyor temporarily fixed to or `near the 'ends of' tlie l guide, Viincontaining and l controlling the longitudinal motion ofthe cutter-bar, l

in combinationwith'a suitable pin,v or its equivalent', secured to or, witbiusaidv bar, andxworking in4 said groove, as is hereinafter specified...

In the annexed drawing- A represents thereoiprocating cutter, secured at which is/suitablyswiveled to or u pontile reciprocating devices of the harvester.

`tend upward and inward, and form ,-groovestbr. thef;

reception of the. edgesgot la`g u'ide, l),'i :he latter of which-is so formed'as to embrace'the upper side of said rod and holdit looselyagainst the'plate C, while lat the -`rear end of-'sad` plate C is-secured a strap, E,

the rod B,and extending outward through said slot, completes the device, the 'operation'of which isas follow:

The cutter A and vrod B, being' at the forwardend .of the plate, with 'said .cutter in a horizontal position,

(as .shown in iig. 1,) upon drawing saidrodbackward,

lthe guided) will 4be correspondingly -mved,1until arrested by' the stop E,V when the. pin b', following the cutter occupiesy a 'vertical position, a's'secn in fig; 2. l

Uponj returning thccutterjand rodtotheir former I cle position, the guide will be carried forward, untilar.- restcdby' astrap, F, situated at the end of' the plate- O,and, bythe continuedinotion ofthe rod, the pin b', following the curve ofthe 4slot d, causesrsaid. rodto rotate until 'the cutte1"acqulresr, a horizontal position. 'There are variouswavs in' which the spiral ,groove can be c-nsed'to produce the above-named result,ljut s they would be modifications only of my invention,-

will describe but-one.

'Asseen infig. 4,"the bar B is: contained within a guide,y correspondingfin 'shape with said rod, and

havinga' sectional formpf abouttwothirds of a cir- Extending longitudinally along' the inner surtce'oi the guide G, are twoI parallel gro'ovesfg and-.g,hav ing relative radial positionsataright Iangle with each otheiyone endof each groovev being curved inward,

so as to connectwith the other, as sbown'in fig. 5.

'The stud'b being placed upon the opposite side of the bar B, so as to cause -thecutterto occupy allori'- zntal position, when said pin4 is in the upper groove g,

the device is ready for operation.

will beheld iirrnly ina horizontal posit-ion, until tile stud reaches -f the curved end 'of' the s lot g, followingf v'which, it will rotate said bar until said-cutter is placed in a vcrticalpositionrwhen said stu will have en" l tered the lower groove g.

Upon' the return stroke, the cutter will be held in a ver-A tical position until'near the end of the stroke, when the stud will runin'to' the upperl grooveg; and turn said cutter downward ,again toits horizontal position.

The 'latterarrangement will` probably prove most desirable, as by itf'the cutter isrigidly held in posii A l tion radially, and, when cutting, kept rmly down to Situateddmmediately beneath and` supporting the its work! The advantages possessedby this manner of operating the cutters are, that i t dispenses entirely with springs and. other-devices for throwingsaid cutter from one plane to the other, and` produces'a positive, invariable motion of tlie.cutter, with but little mechanisnn'and at a small cost.

Having thusfully set,f`orth the nature and merit-s of my invention, y

What I claim as new, and desire 'to secure by Letters l'atent,

, Aspiral groove, etherpcrmancntly or temporarily 'fixed atpr ,near the ends of the guide, which contains l the'cuttc'r-bar 'and controls its longitudinal motion, in combination with a suitable pin, secured to or within saidbar, and working in said groove, substantially as and for the purpose specified.

- ln testimony that I,c1aim the foregoing, I have hereunto set/my hand this 2 6th'day of February, 1870.

' Witnesses: A Jv J. DE FREIIEAS..

GEO. O. MARCY, Y WM. MGCABE. 

